Home / 20,672,288.90-30,974,313.76-12,012,079.87

Finding the Fourth Proportional to 20,672,288.90, 30,974,313.76 and 12,012,079.87

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Solution

The fourth proportional to 20,672,288.90, 30,974,313.76 and 12,012,079.87 is: 17,998,293.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672,288.90 : 30,974,313.76 = 12,012,079.87 : x
  2. Step 2: Convert to fraction form
    20,672,288.90/30,974,313.76 = 12,012,079.87/x
  3. Step 3: Cross multiply
    20,672,288.90x = 30,974,313.76 × 12,012,079.87
  4. Step 4: Simplify right side
    20,672,288.90x = 372,065,930,696,094
  5. Step 5: Solve for x
    x = 372,065,930,696,094/20,672,288.90
  6. Step 6: Final answer
    x = 17,998,293.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.